Journal issues: 5/2013
Features of water oil replacement viscoplastic
In the development of high-viscosity oil fields to enhance oil recovery have been used by a variety of methods: development on the natural modes, the displacement of oil by water reservoir temperature (cold water), thermal methods (injection of hot water and steam), physico-chemical methods. On the basis of the known physical interactions and oil displacement agent developed and implemented a variety of technologies to enhance oil recovery. This article discusses the process of displacement of oil visco-plastic cold water at reservoir temperature. The parameters that influence the advance of the front displacement: displacement liquid water permeability coefficient, the initial pressure gradient and the reduced radius of the well. Initial pressure gradient is proportional to the dynamic viscosity of the oil, depending on the size of the pore channels and the physical properties of the reservoir. One of quite a few important parameters affecting the speed of the displacement front is the degree of consolidation of the collector. Removal of solids indicates the destruction of the initial permeability and porosity of the PPP in the production and injection wells. When wells Katangli field was set significant removal of mechanical impurities in small depressions and down hole pressures, because the bottom hole formation zone collector, weakly. The value of the bottom hole pressure exceeds the tensile strength of the rock and the reduced radius of the well in service increases. To prevent the removal of solids and fixing layer zones used polymer composition “Geoterm-01”. The values of time promoting the displacement front for different pickups, the impact of the reduced radius of the well at the time of the displacement front. It is established that in the displacement of oil by water displacement front hydrodynamic depends not only on the physical properties of the reservoir, but also on the initial pressure gradient of oil displaced.
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filtering process; high-viscosity oil; Katangli field; removal of impurities; two-phase filtration; вынос механических примесей; высоковязкая нефть; двухфазная фильтрация; месторождение Катангли; процесс фильтрации References to this article (GOST) V.A. Korotenko, R.R. Sabitov, N.P. Kushakova, I.V. Sidorov Features of water oil replacement viscoplastic // Electronic scientific journal "Oil and Gas Business". 2013. №5. P.190-196. URL: http://ogbus.ru/authors/KorotenkoVA/KorotenkoVA_1.pdf